oSIST prHD 626 S2:2020
(Main)Overhead distribution cables of rated voltage U0/U(Um): 0,6/1 (1,2) kV
Overhead distribution cables of rated voltage U0/U(Um): 0,6/1 (1,2) kV
HD 626 applies to cables of rated voltage U0/U(Um) = 0,6/1(1,2) kV used in overhead power distribution systems mainly for public distribution, of maximum system voltage not exceeding 1,2 kV. This part (Part 1) specifies the general requirements applicable to these cables, unless otherwise specified in the particular sections of this HD.
The objects of this Harmonisation Document are:
- to standardize cables that are safe and reliable when properly used and equipped with appropriate accessories, in relation to the technical requirements of the system of which they form a part,
- to state the characteristics and manufacturing requirements which have a direct or indirect bearing on safety,
- and to specify methods for checking conformity with those requirements.
Isolierte Freileitungsseile für oberirdische Verteilungsnetze mit Nennspannungen U0/U(Um): 0,6/1 (1,2) kV
Nadzemni razvodni kabli za naznačeno napetost Uo/U(Um): 0,6/1 (1,2) kV
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prHD 626 S2:2020
01-oktober-2020
Nadzemni razvodni kabli za naznačeno napetost Uo/U(Um): 0,6/1 (1,2) kV
Overhead distribution cables of rated voltage U0/U(Um): 0,6/1 (1,2) kV
Ta slovenski standard je istoveten z: prHD 626 S2
ICS:
29.060.20 Kabli Cables
29.240.20 Daljnovodi Power transmission and
distribution lines
oSIST prHD 626 S2:2020 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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HARMONIZATION DOCUMENT DRAFT
prHD 626 S2
DOCUMENT D'HARMONISATION
HARMONISIERUNGSDOKUMENT
August 2020
ICS 29.060.20 Will supersede HD 626 S1:1996 and all of its
amendments and corrigenda (if any)
English Version
Overhead distribution cables of rated voltage U0/U(Um): 0,6/1
(1,2) kV
To be completed To be completed
This draft Harmonization Document is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2020-11-13.
It has been drawn up by CLC/TC 20.
If this draft becomes a Harmonization Document, CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for implementation of this Harmonization Document on a national level.
This draft Harmonization Document was established by CENELEC in three official versions (English, French, German).
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a Harmonization Document. It is distributed for review and comments. It is subject to change without notice
and shall not be referred to as a Harmonized Document.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 67188 Ref. No. prHD 626 S2 E
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Part 1
1 Contents
2 European foreword . 3
3 Introduction . 4
4 1 Scope . 7
5 1.1 General . 7
6 1.2 Object . 7
7 2 Normative references . 7
8 3 Terms and definitions . 7
9 3.1 Definitions relating to insulating and sheathing materials . 7
10 3.2 Definitions relating to the tests. 8
11 3.3 Other . 9
12 4 Marking . 9
13 4.1 Indication of origin . 9
14 4.1.1 General . 9
15 4.1.2 Continuity of Marks . 10
16 4.2 Additional Marking . 10
17 4.3 Durability . 10
18 4.4 Legibility . 10
19 4.5 Common marking . 10
20 4.6 Use of the name CENELEC . 10
21 5 Core identification . 10
22 6 General requirements for the construction of cables . 12
23 6.1 General . 12
24 6.2 Conductors. 12
25 6.2.1 Material . 12
26 6.2.2 Electrical resistance . 12
27 6.2.3 Separator tape . 12
28 6.3 Insulation or insulating sheath . 12
29 6.3.1 Material . 12
30 6.3.2 Application . 12
31 6.3.3 Colour of the insulation . 12
32 6.3.4 Thickness . 13
33 6.3.5 Mechanical properties before and after ageing . 13
34 6.3.6 Additional properties . 13
35 6.4 Oversheath (if any) . 13
36 6.4.1 Material . 13
37 6.4.2 Application . 13
38 6.4.3 Colour of the sheath . 13
39 6.4.4 Thickness . 13
40 6.4.5 Mechanical properties before and after ageing . 13
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41 6.4.6 Other properties . 13
42 6.5 Assembly of cores . 13
43 7 Tests on completed cables . 14
44 8 Sealing and packing . 14
45 9 Current carrying capacity . 14
46 10 Guide to use and selection of cables . 14
47 Annex A (informative) Guide to use and selection of cables . 25
48 A.1 Recommendations for use . 25
49 A.1.1 Permissible applications . 25
50 A.1.2 Highest permissible voltage . 25
51 A.2 Recommendations for storage and transportation . 25
52 A.2.1 Delivery . 25
53 A.2.2 Cable-end sealing . 26
54 A.2.3 Transport . 26
55 A.3 Recommendations for cable laying and installation . 27
56 A.3.1 Installation and operating conditions . 27
57 A.3.2 Minimum permissible installation temperature . 27
58 A.3.3 Cable laying . 28
59 A.3.3.1 Pulling by cable stocking . 28
60 A.3.3.2 Cable route . 28
61 A.4 Minimum bending radius . 28
62 Annex ZZ (informative) Relationship between this European standard and the safety objectives of Directive
63 2014/35/EU [2014 OJ L96] aimed to be covered . 29
64 Bibliography . 31
65
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66 European foreword
67 This document (prHD 626 S2:2020) has been prepared by CLC/TC 20, “Electric cables”.
68 This document is currently submitted to the Enquiry.
69 The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)
70 This document will supersede HD 626 S1:1996 and all of its amendments and corrigenda (if any).
71 This document has been prepared under a mandate given to CENELEC by the European Commission and the
72 European Free Trade Association, and supports essential requirements of EU Directive(s).
73 For the relationship with EU Regulation 2014/35/EU, see informative Annex ZZ, which is an integral part of this
74 document.
75 References to other HDs, ENs and International Standards are given in the particular parts or sections.
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Part 1
76 Introduction
77 This edition has been prepared to cover the latest market requests on overhead distribution cables of rated
78 voltage Uo/U(Um): 0,6/1 (1,2) kV. Since the publication of the first edition in 1996 and the amendments in 1997
79 and 2002, a number of particular sections have been withdrawn, new sections have been added from countries
80 not covered in the first edition, technical improvements have been added and a number references to test
81 method standards were updated. The Table of Content indicates even the withdrawn sections.
82 Part 1 of this document contains the General Requirements applicable to cables for overhead distribution and
83 service, specified in the particular sections of Parts 3 to 10. In general, bundle assembled cores are specified.
84 Single core cables are specified in Part 9.
85 The document contains the following Parts, arranged according to the main constructional features of the cables
86 covered:
87 HD 626 Part 1 General Requirements
88 HD 626 Part 2 Additional Test Methods
89 HD 626 Part 3 PE insulated self-supporting cables, (bundle assembled cores)
90 HD 626 Part 4 XLPE insulated self-supporting cables, (bundle assembled cores)
91 HD 626 Part 5 PE insulated cables with messenger, (bundle assembled cores)
92 HD 626 Part 6 XLPE insulated cables with messenger, (bundle assembled cores)
93 HD 626 Part 7 XLPE insulated and sheathed self-supporting cables, (bundle assembled cores)
94 HD 626 Part 8 XLPE insulated and PVC sheathed cables with messenger, (bundle assembled cores)
95 HD 626 Part 9 Single core cables
96 HD 626 Part 10 Service cables with concentric neutral conductor
97 Each of Parts 3 to 10 inclusive contains a number of Sections, and the Technical Board has agreed (D68/047,
98 Brussels, June 1991) that National Committees need at present only implement in their national language those
99 Sections having national applicability. The obligation remains however to announce the full HD in public by titles
100 and numbers, and also to withdraw any conflicting national standards.
101 Page numbering reflects the arrangement into Parts and Particular sections, e.g. Page 5-D-6 is Page 6 of
102 Particular Section D of Part 5.
103 CONTENTS (prHD 626 S2:2020)
PART 0 CONTENTS OF HD 626
PART 1 GENERAL REQUIREMENTS
PART 2 ADDITIONAL TEST METHODS
PART 3 TED SELF SUPPORTING CABLES
(bundle assembled cores)
ssembled cores for overhead distribution and service (Type 3A-1)
3 A
(Cables with aluminium conductors)
3 Cwn
ssembled cores for overhead service (Type 3 I-1)
3 I
(Cables with aluminium conductors)
ssembled cores for overhead distribution and service (Type 3L-1)
3 L
(Cables with aluminium conductors)
PAR T 4 LATED SELF SUPPORTING CABLES
(bundle assembled cores)
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4 B ssembled cores for overhead service (Types 4B-1 and 4B-2)
(Cables with aluminium conductors (Type 4B-1) or with copper conductors (Type 4B-2))
4 E ssembled cores for overhead service (Type 4E-1)
(Cables with aluminium conductors)
4 F ssembled cores for overhead distribution and service (Type 4F-1)
(Cables with aluminium conductors)
4 Gwn
4 J ssembled cores for overhead service (Types 4J-1 and 4J-2)
(Cables with aluminium conductors (Type 4J-1) or with copper conductors (Type 4J-2))
4 K ssembled cores for overhead service (Type 4K 1)
(Cables with aluminium conductors)
4 M ssembled cores for overhead distribution and service (Type 4M-1)
(Cables with aluminium conductors)
4 N ssembled cores for overhead distribution (Type 4N-1)
(Cables with aluminium conductors)
4 O overhead distribution cables of rated voltage Uo/U(Um): 0,6/1 (1,2) kV
4 P ssembled cores for overhead distribution and service (Type 4P-1 and Type 4P-2)
PART 5 TED CABLES WITH MESSENGER
(bundle assembled cores)
5 D ssembled cores for overhead distribution and service (Type 5D-1)
(Cables with aluminium phase conductors and uninsulated aluminium alloy neutral
conductor)
5 Iwn
PAR T 6 LATED CABLES WITH MESSENGER
(bundle assembled cores)
Bundle assembled cores for overhead distribution (Type 6B-1)
6 B
(Cables with aluminium phase conductors and aluminium alloy neutral conductor)
6 D Withdrawn
Bundle assembled cores for overhead distribution (Type 6E-1)
6 E
(Cables with aluminium phase conductors and aluminium alloy neutral conductor)
Bundle assembled cores for overhead distribution (Type 6J-1)
6 J
(Cables with aluminium phase conductors and aluminium alloy neutral conductor)
Bundle assembled cores for overhead distribution (Type 6K-1)
6 K
(Cables with aluminium phase conductors and aluminium alloy neutral conductor)
Bundle assembled cores for overhead distribution (Type 6N-1)
6 N
(Cables with aluminium phase conductors and aluminium alloy neutral conductor)
PAR T 7 LATED AND SHEATHED SELF SUPPORTING CABLES
(bundle assembled cores)
7 H ssembled cores for overhead distribution and service (type 7H), Self-supporting XLPE insulated
cables
(Cables with tinned copper phase conductors and tinned copper neutral conductor)
PAR T 8 LATED AND SHEATHED CABLES WITH MESSENGER
(bundle assembled cores)
8 H ssembled cores for overhead distribution and service (type 8H), Neutral conductor messenger
XLPE insulated cables
(Cables with aluminium phase conductors and aluminium alloy neutral conductor)
PART 9 Single core cables
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9 F Withdrawn
9 G Withdrawn
9 I Withdrawn
Single cores for overhead distribution (Type 9N-1 and Type 9N-2)
9 N (EPR insulated and PCP sheath cables with aluminium conductors Type 9N-1 or with copper
conductors Type 9N-2)
PART 10 Service cables with concentric neutral conductor
10 N re and three cores service cables with concentric neutral conductor (Type 10N)
(Cables with tinned copper phase conductors and tinned copper concentric neutral
conductor)
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104 1 Scope
105 1.1 General
106 This document applies to cables of rated voltage U /U(U ) = 0,6/1(1,2) kV used in overhead power distribution
0 m
107 systems mainly for public distribution, of maximum system voltage not exceeding 1,2 kV.
108 This part (Part 1) specifies the general requirements applicable to these cables, unless otherwise specified in
109 the particular sections of this HD.
110 Test methods are specified in EN 60228, EN 60332-1 series, EN 60811 series and in HD 605 or in Part 2 of this
111 HD. The particular types of cables are specified in Parts 3 to 10.
112 1.2 Object
113 The objects of this document are:
114 — to standardize cables that are safe and reliable when properly used and equipped with appropriate
115 accessories, in relation to the technical requirements of the system of which they form a part,
116 — to state the characteristics and manufacturing requirements which have a direct or indirect bearing on
117 safety,
118 — and to specify methods for checking conformity with those requirements.
119 2 Normative references
120 The following documents are referred to in the text in such a way that some or all of their content constitutes
121 requirements of this document. For dated references, only the edition cited applies. For undated references, the
122 latest edition of the referenced document (including any amendments) applies.
123 HD 186, Marking by inscription for the identification of cores of electric cables having more than 5 cores
124 EN 60228, Conductors of insulated cables
125 HD 60364-5-52:2011, Low-voltage electrical installations - Part 5-52: Selection and erection of electrical
126 equipment - Wiring systems (IEC 60364-5-52:2009)
127 HD 605 S3:2019, Electric cables - Additional test methods
128 IEC 60287 series, Electric cables - Calculation of the current rating
129 3 Terms and definitions
130 For the purposes of this document, the following terms and definitions apply.
131 ISO and IEC maintain terminological databases for use in standardization at the following addresses:
132 — ISO Online browsing platform: available at https://www.iso.org/obp
133 — IEC Electropedia: available at http://www.electropedia.org/
134 3.1 Definitions relating to insulating and sheathing materials
135 3.1.1
136 insulating and sheathing materials
137 types of insulating and sheathing compounds covered in this document are listed below, together with their
138 abbreviated designations
139 Note 1 to entry: See Table 1.
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140 Table 1
Insulating and Sheathing Compounds See:
1. Insulating and a) Thermoplastic
a Insulating compounds based on: (PE) Table 2
insulating sheath ( )
- Polyethylene
b) Cross linked
Insulating compound based on: (XLPE) Table 3
- Cross linked polyethylene
c) Elastomeric
Insulating compound based on: (EPR) Table 5
- Ethylene propylene rubber
2. Sheath a) Cross linked
Sheathing compound based on: (XLPE) Table 4
- Cross linked polyethylene
b) Thermoplastic
Sheathing compound based on: (PVC)
- Polyvinyl chloride
c) Elastomeric
Sheathing compound based on: (PCP,
Table 6
- Polychloroprene, chlorosulfonated CSP)
polyethylene or similar polymer
a
An insulating sheath is an extruded layer which simultaneously acts as an insulation and as a sheath
141 3.1.2
142 type of compound
143 category in which a compound is classified according to its properties is determined by specific tests; the type
144 designation is not directly related to the composition of the compound
145 3.2 Definitions relating to the tests
146 3.2.1
147 type tests
148 T
149 tests required to be made before supplying a type of cable covered by this HD on a general commercial basis
150 in order to demonstrate satisfactory performance characteristics to meet the intended application
151 Note 1 to entry: These tests are of such a nature that, after they have been made, they need not be repeated unless
152 changes are made in the cable material, design or type of manufacturing process which might change the performance
153 characteristics
154 3.2.2
155 sample tests
156 S
157 tests made on samples of completed cable, or components taken from a completed cable adequate to verify
158 that the finished product meets the design specifications
159 3.2.3
160 routine tests
161 R
162 tests made on all production cable lengths to demonstrate their integrity
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163 3.2.4
164 tests after installation
165 tests intended to demonstrate the integrity of the cable and its accessories as installed
166 Note 1 to entry: Tests classified as sample(S) or routine (R) could be required as part of type approval schemes.
167 3.3
168 rated voltage
169 reference voltage for which the cable is designed, and which serves to define the electrical tests
170 Note 1 to entry: The rated voltage is expressed by the combination of the following values U / U (U ) expressed in kV.
0 rn
171 U is the rms. value between any insulated conductor and earth;
0
172 U = 0,6 kV
0
173 U is the rms. value between any two phase-conductors of a multicore cable;
174 U = 1,0 kV
175 U is the rms. value of the highest system voltage for which the equipment may be used;
rn
176 U = 1,2 kV.
rn
177 Note 2 to entry: In an alternating current system, the rated voltage of a cable shall be at least equal to the nominal voltage
178 of the system for which it is intended.
179 Note 3 to entryThe cables of this HD may be used in DC Systems with a maximum voltage against earth not exceeding
180 0,9 kV.
181 3.3 Other
182 3.3.1
183 messenger
184 wire or a rope, the primary function of which is to support the cable in aerial installation, which may be separate
185 from or integral with the cable it supports
186 Note 1 to entry: In this HD, the messenger is called in some sections “neutral core” and even “messenger neutral core”
187 [IEV 461-08-03]
188 4 Marking
189 4.1 Indication of origin
190 4.1.1 General
191 Cables shall be provided with an indication of origin consisting of:
192 1. Either the manufacturer's identification thread,
193 2. or the continuous marking of the manufacturer's name or trademark, or (if legally protected)
194 identification number by one of the two following alternative methods:
195 a) printed tape within the cable,
196 b) printing, indenting or embossing on the outer surface of at least one core.
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197 4.1.2 Continuity of Marks
198 Unless otherwise specified in the particular sections, each specified mark shall be regarded as continuous if the
199 distance between the end of the mark and the beginning of the next identical mark does not exceed:
200 • 550 mm if the marking is on the outer surface of the cable
201 • 275 mm if the marking is:
202 • on the insulation of a sheathed cable
203 • or on a tape within a sheathed cable.
204 NOTE A “Specific Mark ” is any mandatory mark covered by this Part of the HD or by the particular requirements of
205 Part 3 onwards of this HD.
206 The diagram below shows an example of the marking as use on the outer surface of the cable, where the word
207 'ORIGIN' is for the mandatory information required by the subclause 3.1, and “XYZ” is one of any other
208 mandatory marks.
209
210 Figure 1
211 4.2 Additional Marking
212 Additional marking requirements may be specified in the particular sections.
213 4.3 Durability
214 Printed markings shall be durable. Durability shall be checked by the test given in HD 605 S3:2019, 2.5.4. The
215 printed legend shall be legible after carrying out the test.
216 4.4 Legibility
217 All markings shall be legible. Printed markings shall be in contrasting colours. The colours of the identification
218 threads shall be easy to recognize or easily be made recognizable, if necessary, by cleaning with a suitable
219 solvent. The printed legend shall be legible after carrying out the test.
220 4.5 Common marking
221 Under consideration.
222 4.6 Use of the name CENELEC
223 The name CENELEC, in full or abbreviated, shall not be marked directly on, or in, the cables.
224 5 Core identification
225 The cores shall be identified by ribs (examples of the code method is given hereafter) or by numbers (printing,
226 indenting or embossing on the outer surface of the core), or both of them. For a two cores cable, this core
227 identification is valid too.
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228
229 Figure 2
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230 The colour or numbering or coding schemes relevant to the various types of cables are given in the particular
231 sections of this HD.
232 When identification is made by numbers, they shall be printed in a colour which contrasts with the core colour.
233 Marking shall comply with HD 186 unless otherwise specified.
234 The colours or numbers shall be clearly identifiable and durable. Durability shall be checked by the test specified
235 in HD 605 S3:2019, 2.5.4.
236 Compliance with these requirements shall be verified by visual examination.
237 6 General requirements for the construction of cables
238 6.1 General
239 Compliance with the requirements given in subclauses 6.2 to 6.5 and in the particular sections of this document
240 shall be checked by inspection and by measurements according to the test methods in documents listed in the
241 Scope of the HD 626 S2:2020, Part 1, Subclause 1.1. or in particular section
...
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